CVE-2011-1495

CVE-2011-1495 is a high-severity vulnerability in Linux Linux Kernel with a CVSS 2.0 base score of 7.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

• Severity: High (CVSS 2.0 base score 7.2)
• EPSS exploit prediction: 0% (29th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-20
• Affected product: Linux Linux Kernel
• Published: 2011-05-03
• Last modified: 2026-06-16

Description

drivers/scsi/mpt2sas/mpt2sas_ctl.c in the Linux kernel 2.6.38 and earlier does not validate (1) length and (2) offset values before performing memory copy operations, which might allow local users to gain privileges, cause a denial of service (memory corruption), or obtain sensitive information from kernel memory via a crafted ioctl call, related to the _ctl_do_mpt_command and _ctl_diag_read_buffer functions.

Frequently asked questions

What is CVE-2011-1495?

drivers/scsi/mpt2sas/mpt2sas_ctl.c in the Linux kernel 2.6.38 and earlier does not validate (1) length and (2) offset values before performing memory copy operations, which might allow local users to gain privileges, cause a denial of service (memory corruption), or obtain sensitive information from kernel memory via a crafted ioctl call, related to the _ctl_do_mpt_command and _ctl_diag_read_buffer functions.

How severe is CVE-2011-1495?

CVE-2011-1495 has a CVSS 2.0 base score of 7.2, rated high severity.

Is CVE-2011-1495 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-1495?

CVE-2011-1495 primarily affects Linux Linux Kernel. In total, 666 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-1495?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2011-1495 published?

CVE-2011-1495 was published on 2011-05-03 and last updated on 2026-06-16.

References

• http://downloads.avaya.com/css/P8/documents/100145416
• http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00020.html
• http://lkml.org/lkml/2011/4/5/327
• http://openwall.com/lists/oss-security/2011/04/05/32
• http://openwall.com/lists/oss-security/2011/04/06/2
• http://rhn.redhat.com/errata/RHSA-2011-0833.html
• http://secunia.com/advisories/46397
• http://www.securityfocus.com/archive/1/520102/100/0/threaded
• http://www.securityfocus.com/bid/47185
• http://www.vmware.com/security/advisories/VMSA-2011-0012.html
• https://bugzilla.redhat.com/show_bug.cgi?id=694021
• https://patchwork.kernel.org/patch/688021/

Affected products (666)

• cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.0:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.1:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.1:rc1:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.1:rc2:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.1:rc3:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.2:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.2:rc1:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.2:rc2:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.2:rc3:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.3:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.3:rc1:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.3:rc2:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.3:rc3:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.3:rc4:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.4:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.4:rc1:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.4:rc2:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.4:rc3:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.5:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.5:rc1:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.5:rc2:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.5:rc3:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.6:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.6:rc1:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.6:rc2:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.6:rc3:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.7:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.7:rc1:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.7:rc2:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.7:rc3:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.8:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.8:rc1:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.8:rc2:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.8:rc3:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.8:rc4:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.8.1:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.9:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.9:rc1:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.9:rc2:*:*:*:*:*:*

More vulnerabilities in Linux Linux Kernel

• CVE-2023-2163 — Critical (CVSS 10.0): Incorrect verifier pruning in BPF in Linux Kernel >=5.4 leads to unsafe code paths being incorrectly marked as safe,…
• CVE-2015-8104 — Critical (CVSS 10.0): The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a…
• CVE-2015-1421 — Critical (CVSS 10.0): Use-after-free vulnerability in the sctp_assoc_update function in net/sctp/associola.c in the Linux kernel before…
• CVE-2014-2523 — Critical (CVSS 10.0): net/netfilter/nf_conntrack_proto_dccp.c in the Linux kernel through 3.13.6 uses a DCCP header pointer incorrectly,…
• CVE-2010-2495 — Critical (CVSS 10.0): The pppol2tp_xmit function in drivers/net/pppol2tp.c in the L2TP implementation in the Linux kernel before 2.6.34 does…
• CVE-2010-2521 — Critical (CVSS 10.0): Multiple buffer overflows in fs/nfsd/nfs4xdr.c in the XDR implementation in the NFS server in the Linux kernel before…

All CVEs affecting Linux Linux Kernel →

Other CWE-20 (Improper Input Validation) vulnerabilities

• CVE-2026-48316 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
• CVE-2026-48281 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
• CVE-2026-48277 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
• CVE-2026-48055 — Critical (CVSS 10.0): Streambert is a cross-platform Electron Desktop App to stream and download any video media. In versions 2.4.0 and…
• CVE-2026-34910 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in UniFi OS…
• CVE-2026-33587 — Critical (CVSS 10.0): Lack of user input sanitisation in Open Notebook v1.8.3 allows the application user to execute Python code (and…

Browse all CWE-20 (Improper Input Validation) vulnerabilities →